Non-stationary hydrological frequency analysis based on the reconstruction of extreme hydrological series
نویسندگان
چکیده
منابع مشابه
The influence of non-stationarity in extreme hydrological events on flood frequency estimation
Substantial evidence shows that the frequency of hydrological extremes has been changing and is likely to continue to change in the near future. Non-stationary models for flood frequency analyses are one method of accounting for these changes in estimating design values. The objective of the present study is to compare four models in terms of goodness of fit, their uncertainties, the parameter ...
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Current methods of estimation of the univariate spectral density are reviewed and some improvements are suggested. It is suggested that spectral analysis may perhaps be best thought of as another exploratory data analysis (EDA) tool which complements rather than competes with the popular ARIMA model building approach. A new diagnostic check for ARMA model adequacy based on the nonparametric spe...
متن کاملMultivariate quantiles in hydrological frequency analysis
2 Several hydrological phenomena are described by two or more correlated characteristics. 3 These dependent characteristics should be considered jointly to be more representative of the 4 multivariate nature of the phenomenon. Consequently, probabilities of occurrence cannot be 5 estimated on the basis of univariate frequency analysis (FA). The quantile, representing the value 6 of the variable...
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چکیده ندارد.
15 صفحه اولMultivariate flexible least squares analysis of hydrological time series
Abstract Models with coefficients which change with time can be developed by using Kalman filter techniques and these have been applied to model river flow, rainfall and other hydrological time series. However, application of Kalman filter techniques requires assumptions about the statistics of processes and state variables which may depend on unknown factors, and these assumptions may not be v...
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ژورنال
عنوان ژورنال: Proceedings of the International Association of Hydrological Sciences
سال: 2015
ISSN: 2199-899X
DOI: 10.5194/piahs-371-163-2015